The Los Angeles Police Department is searching for a woman who allegedly used pepper spray on at least 20 people at the store in what authorities said was a deliberate attempt to get more merchandise.

Police on Friday were trying to develop a description of the woman, who left the store after the incident.

One witness said screams erupted after about 100 people waiting in line to snag Xbox gaming consoles and Wii video games got into a shoving match.

Alejandra Seminario, 24, said she was waiting in line to grab some toys at the store around 9:55 p.m. when people the next aisle over started shouting and ripping at the plastic wrap encasing gaming consoles. The store was supposed to be opened at 10 p.m.

"People started screaming, pulling and pushing each other, and then the whole area filled up with pepper spray," the Sylmar resident said. "I guess what triggered it was people started pulling the plastic off the pallets and then shoving and bombarding the display of games. It started with people pushing and screaming because they were getting shoved onto the boxes."

The pepper spray wafted through the air, Seminario said, and she breathed some in and started coughing. Her face also started itching.